SOLUTION: An urn contains 5 red marbles, 8 blue marbles, 7 white marbles, and 5 yellow marbles. 4 marbles are selected at random. What is the probability that each marble is a different colo

Algebra ->  Probability-and-statistics -> SOLUTION: An urn contains 5 red marbles, 8 blue marbles, 7 white marbles, and 5 yellow marbles. 4 marbles are selected at random. What is the probability that each marble is a different colo      Log On


   

Question 616181: An urn contains 5 red marbles, 8 blue marbles, 7 white marbles, and 5 yellow marbles. 4 marbles are selected at random. What is the probability that each marble is a different color? OR that 4 marbles are the same color?
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi,

 An urn contains 25 marbles: 5 red, 8 blue, 7 white , and 5 yellow.

4 marbles are selected at random.

P(each different color) = %285C1%2A8C1%2A7C1%2A5C1%29%2F%2825C4%29

P(same color) = P(all red)+P(all blue) + P(all white) +P(all yellow)

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